Workingf bellows bt steam



UNITED STATES .PATENT orricn. ,l

MARTIN BELL; or ANTrS TowNsrrrP, HUNmrNenoN COUNTY, PENNSYLVANIA. f

WORKING BELLowS BY STEAM.

Specification of4 `I'aetters Patent No. 705, dated April 24, 1838. i

Bev it known that I,` MARTIN BELL, of:

Antis townshipT the county of Hunting.- don and Statew of. Pennsylvania,A have inV vented a new' `and useful' Improvement, being ai bellows for' creating the blast for furnaces. and for other purposes by steam, called Bellis Steam-bellows, which` isy described as follows,- r'eiterence being: had to 1 the annexed drawings of the same, making part of this specification.

The nature of my invention consists in making the steam act on. the; under side of a vibrating cylinder open! aft.y the lower end, which will be called for the sake of brevity a piston, in a cylinder, for producing a blast on the other side, using oil as a packing, thereby saving much friction.

To enable others to make and use my invention I will proceed to describe its construction and operation.

This steam bellows consists of a cylinder A, Figures 1 and 2, twice the required stroke of the piston, nearly the same diameter inside, as the piston or vibrating cylinder closed at the top, except the apertures hereafter described for the piston rod, the admission of air and for the discharge of the blast. To the bottom of this outer cylinder is secured by flanges and bolts a circular rim B. To this rim is fastened another cylinder C, of lesser diameter and length than the one before described and placed in an upright position within it, leaving a space D of about 4L or 6 inches between the two all around to contain the oil which is to stand about two or three inches above the top of the cylinder C. This cylinder C is for the purpose of lessening the quantity of oil. The two cylinders may be made of wood or iron. Gage cocks are inserted into the side of the outer cylinder to try the height of the oil.

Through the center of the head of the inner cylinder C passes a tube E rising above said head about 6 inches for admitting the steam and one inch above the top of the float hereafter described. The lower end of this pipe is connected with a horizontal tube F which is connected to the lower end of the vertical tube G of the other cylinder X hereafter described. In the center of the horizontal tube F is a valve box or steam chamber H, in which is inclosed a common sliding valve I. To this box is attached a steam tube at K Figs. 1 and 3 which leads der.

The piston or vibraytingcylinder cons-ists to *the* boiler for conveying." the; steam. The

sliding. va'lve` is worked by means'of rods and elbowsor other contrivarnces well known l to mechanics. 1 i

' Upon the top of the oil is placed a floatM,

Fig.4 2, of the sameshape VandV nearly of the saine sizeV of they inside of therpistoncylinl of af sheet iron cylinder N of` aV greater di# arneter than the` innerrcylinder and* ofaf" lesser' duamneter` than the outer cylinder to r move without tiriction closed at one end by a head Of and@ open at thectlier. rIlhis vilo-rat ing cylinder 1s put over the inner cylinderits sides in the oil and its head above the` floats and mouth of the steam tubes--it has i a piston rod Q extending upward through the center of the head of the outer cylinder-the aperture through which itV passes being surrounded by packing. In this'head 1s an opening R surrounded by a box in"` which there is a Vswinging valve S. In the same head there is an a rture T into which is inserted the blast tube. This'blast tube is also furnished with a valveY that opens outward. The blast tubes are not shown in the drawings.

The steam enters between the vibrating cylinder or piston and float driving the former to the top, of the outercylinder and t-he latter acting upon the top of the oil. The rising of the piston condenses suddenly the air in the cylinder and causes it to pass through the blast tubef-the closing of the swinging valve through which it entered preventing its escape in that direction.

The size of the piston should be as near the size of the inside of the outside cylinder as it can work freely without creating friction.

The piston` rod is attached to a vibrating beam U, or lever by a shacklefbarto'which the piston rod V of the cylinder X is attached-at the other end; This lever or beam the vibrating beam by pitman and crank in the usual manner. i Y

A common condenser may be attached which will save much steam, and in case of using the condenser the lower edge of the piston or vibrating cylinder should be im'- mersed in the oil atall times abouttwo feet.

Should the oil raise too highfrom the Y y p condensation of the steam the water canbe CIT letl ofi" at the bottom by a common cock Which can be Worked by hand or made toV act by a rod fastened to the float on top of the oil-*the rod extending dovvn through the oil and head of the inside cylinder attached to the cock by levers in any known manner common packing. Y The other'cylinders, pistons, valves, tubes, &c., placed 'by Vthe side of the one ljust'described are constructed in a similar manner. NOW, having placed thepistons in the cylinders fasten the tops of said cylinders thereon@ The steam being up, one piston being` raised and the other dovvn, the communication Will be'opened from the boiler Y to the piston that is down, by the slide valve.

T he steainvvill then rush in and act against the under side of the piston head and down- Ward against the oil, Which Will. cause the piston to rise, the air becoming condensed above Will act against the oil around the piston and keep it from rising but a very said rod Working tight throughl little higher than on'the insider-fthe steam continuing to enterthe piston 'will rise to the top of the outer vcylinder-or until stopped by the crank and iy Vvvhereel.V The other piston being noW dovvn and ysteam being let onitwill ascendl in lthe same manner. v v

The inventionclaimed byjme, the said MARTIN BELL, consists in- Inclosing the outer cylinder Arby aV head,V

through which the piston rod of the cylinder N' Works air tight, by means of a stuiling box; and the. particular arrangement and combination of the'partsiby which the steam is admitted and made toV operate upon the lower side, Vor* interior, of thecylinder N` as constituting a component part of a bloWin machine in the manner set forth.

l MARTIN BELL.

Witnesses: Y

WM. P. IELLI0T EDMUND MAHER. 

